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Finding the Fourth Proportional to 192,912.48, 289,414.20 and 80,530.20

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Solution

The fourth proportional to 192,912.48, 289,414.20 and 80,530.20 is: 120,814.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,912.48 : 289,414.20 = 80,530.20 : x
  2. Step 2: Convert to fraction form
    192,912.48/289,414.20 = 80,530.20/x
  3. Step 3: Cross multiply
    192,912.48x = 289,414.20 × 80,530.20
  4. Step 4: Simplify right side
    192,912.48x = 23,306,583,408.84
  5. Step 5: Solve for x
    x = 23,306,583,408.84/192,912.48
  6. Step 6: Final answer
    x = 120,814.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.